CVE-2025-71228
Kernel Page Fault Vulnerability in Linux LoongArch VM_NONE/VM_SHARED
Publication date: 2026-02-18
Last updated on: 2026-02-27
Assigner: kernel.org
Description
Description
CVSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel on the LoongArch architecture. It involves an incorrect setting of the protection_map[] for VM_NONE and VM_SHARED memory areas on 32-bit platforms. Specifically, the _PAGE_PROTNONE value is 0, so setting a virtual memory area (VMA) to VM_NONE or VM_SHARED causes pages to be marked as non-present, which leads to a kernel page fault (Oops). The fix replaces _PAGE_PROTNONE with _PAGE_PRESENT to set the correct protection_map[].
How can this vulnerability impact me? :
This vulnerability can cause the Linux kernel to crash due to a page fault when handling certain memory areas (VM_NONE or VM_SHARED) on 32-bit LoongArch platforms. Such crashes (kernel Oops) can lead to system instability, potential denial of service, and unexpected reboots, impacting system availability.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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How can this vulnerability be detected on my network or system? Can you suggest some commands?
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What immediate steps should I take to mitigate this vulnerability?
I don't know